// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluation
es6id: 14.4.14
description: Value received from invocation of generator's `next` method
info: |
  YieldExpression : yield * AssignmentExpression

  1. Let exprRef be the result of evaluating AssignmentExpression.
  2. Let value be ? GetValue(exprRef).
  3. Let iterator be ? GetIterator(value).
  4. Let received be NormalCompletion(undefined).
  5. Repeat
     a. If received.[[Type]] is normal, then
        i. Let innerResult be ? IteratorNext(iterator, received.[[Value]]).
        ii. Let done be ? IteratorComplete(innerResult).
        iii. If done is true, then
             1. Return ? IteratorValue(innerResult).

  7.4.4 IteratorValue

  1. Assert: Type(iterResult) is Object.
  2. Return ? Get(iterResult, "value").
features: [generators, Symbol.iterator]
---*/

function Test() {
    var quickIter = {};
    var exprValue, nextReceived, done, iter;
    quickIter[Symbol.iterator] = function() {
      return {
        next: function(x) {
          nextReceived = x;
          return {
            done: done,
            value: 3333
          };
        }
      };
    };
    function* g() {
      exprValue = yield * quickIter;
    }

    done = true;
    iter = g();
    iter.next(4444);

    assert.sameValue(
      nextReceived, undefined, 'received value (previously-exhausted iterator)'
    );
    assert.sameValue(exprValue, 3333, 'expression value (previously-exhausted iterator)');

    done = false;
    exprValue = null;
    iter = g();
    iter.next(2222);
    done = true;
    iter.next(5555);

    assert.sameValue(nextReceived, 5555, 'received value');
    assert.sameValue(exprValue, 3333, 'expression value');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
